Home / 9,900.90-13,663.26-5,423.94

Finding the Fourth Proportional to 9,900.90, 13,663.26 and 5,423.94

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Solution

The fourth proportional to 9,900.90, 13,663.26 and 5,423.94 is: 7,485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.90 : 13,663.26 = 5,423.94 : x
  2. Step 2: Convert to fraction form
    9,900.90/13,663.26 = 5,423.94/x
  3. Step 3: Cross multiply
    9,900.90x = 13,663.26 × 5,423.94
  4. Step 4: Simplify right side
    9,900.90x = 74,108,702.44
  5. Step 5: Solve for x
    x = 74,108,702.44/9,900.90
  6. Step 6: Final answer
    x = 7,485.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.